This study examined the effects of different vegetable oil sources on the Fatty Acid (FA)composition of muscle and performance of beef steer twenty one steers (384±17 kg BW) wereassigned in seven treatment that fed diets containing 0% oil (control), 2 and 4% of Canola Oil (CO), SunflowerOil (SO) and Restaurant Waste Oils (RWO). steers fedRibeye steaks from steers fed CO, SO and RWO for 90 days ofexperiment were used after slaughtering to evaluatethe effects of oil source on fatty acid composition. Amountsof muscle saturated FAs decreased and polyunsaturated FAs increased in both 2% CO and 2% SO groups.The highest contents of Total n-3, n-6 and n-7 FAs were significantly (p<0.05)Control animals and those fed 2% oils tended to have higher dry matter intake (DMI, <0.05).
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